WO1993010724A1 - Endoprothese - Google Patents

Endoprothese Download PDF

Info

Publication number
WO1993010724A1
WO1993010724A1 PCT/EP1992/002730 EP9202730W WO9310724A1 WO 1993010724 A1 WO1993010724 A1 WO 1993010724A1 EP 9202730 W EP9202730 W EP 9202730W WO 9310724 A1 WO9310724 A1 WO 9310724A1
Authority
WO
WIPO (PCT)
Prior art keywords
prosthesis
tabs
plates
connection
endoprosthesis
Prior art date
Application number
PCT/EP1992/002730
Other languages
German (de)
English (en)
Inventor
Arnold Keller
Original Assignee
Waldemar Link Gmbh & Co.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Waldemar Link Gmbh & Co. filed Critical Waldemar Link Gmbh & Co.
Priority to US08/094,082 priority Critical patent/US5383933A/en
Priority to EP92923803A priority patent/EP0568676B1/fr
Priority to DE59205114T priority patent/DE59205114D1/de
Publication of WO1993010724A1 publication Critical patent/WO1993010724A1/fr
Priority to GR960400697T priority patent/GR3019293T3/el

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/28—Bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/38—Joints for elbows or knees

Definitions

  • the invention relates to an endoprosthesis with two prosthesis parts connected by an overlap connection.
  • FIG. 1 An example of this is a prosthesis for rigid connection of two bone fragments or for arthrodesis of two tubular bones that are otherwise connected by a joint.
  • the two bones can be angled against each other so that the stems of the two prostheses can be inserted into the bones.
  • the bones are then aligned with one another and the parts of the prostheses facing one another are connected to one another. This can be done, for example, in a form-fitting manner using a cone or pin at the end of one shaft, which is inserted into a corresponding sleeve at the end of the other shaft.
  • the invention avoids these disadvantages in the case of a strap connection in that the ends of the overlapping straps are positively received by pockets on the other part of the prosthesis.
  • a small distraction is required, the length of which corresponds to the length of the engagement of the tab ends in the associated pockets. This length is considerably less than in the case of a tenon or cone connection, in which a distraction over practically the entire length of the connection area is required.
  • an engagement length of the tab ends into the associated pockets of not more than 1/5, preferably not more than 1/10 of the total overlap length is sufficient.
  • devices for securing the tabs in the engaged position are provided, which only need to ensure that no longitudinal displacement of the tabs relative to one another can take place, through which the tab ends could get out of the associated pockets.
  • the relevant technology provides such means in various forms. The easiest way is to screw the tabs together. It is noteworthy that the screw connection prevents longitudinal displacement even if a screw should have loosened a little. In contrast to the known, screwed tab connections the security of the connection is not affected by the screw loosening.
  • the tabs near their transition into the associated prosthesis part are thicker than at their free end in that the contact surface, which they face each other, is inclined to the common longitudinal axis of the connecting area of the prosthesis parts. Because the tabs are thickest at the end at which they are firmly connected to the associated prosthesis part, they can pass into the prosthesis part with the same cross section without forming dangerous notches, while their end engaging in the pocket of the other prosthesis part accordingly is thinner.
  • the bevel allows the tab ends and the pockets surrounding them to be wedged together, so that there is a self-locking, play-free engagement position.
  • Fig. 2 is a side view transverse to that of FIG. 1, Fig. 3 and 4 separate side views of the
  • FIGS. 5 and 6 are longitudinal views of the connection areas of the prosthesis parts.
  • the two prosthesis parts each have a shaft 1 for implantation in the thigh or lower leg bone.
  • Your connection area 2 comprises two flaps 3, which complement one another to form a cylindrical outer shape, the contact surface 6 of which extends so inclined that the thicker end 4 merges in one piece and with undiminished bending strength into the associated shaft part 1, while the free end 5 in the plane of the illustration 3 and 4 is approximately half as thick as the thicker end 4 and its cross-sectional area is approximately 1/3 as large.
  • the tabs lie flat against one another along the surface 6 in the connected state according to FIGS. 1 and 2. They can be secured in this position by means of screws 7.
  • each tab 3 this is enclosed by a ring 8, which includes a pocket 9 with the associated end of the contact surface 6, the cross section of which in longitudinal view according to FIGS. 5 and 6 corresponds to that of the end part 5 of the other tab.
  • the dimensions are selected so that in the play-free collapsed condition, which is shown in FIG. 3, the contact surfaces 6 and the peripheral surfaces of the tab ends 5 come into contact with one another or the respective ring 8 without play, so that the mere Interaction of the tab ends 5 with the pockets 9 ensures a rigid connection.
  • the security of the connection is further increased by the wedge effect of the contact surface 6 under the prosthesis load, which tries to push the two prosthesis parts together.
  • the tabs are secured by screws 7, wherein the mating opposite screw holes 10, 11 are arranged so that even if they are a little offset from each other in the assembled state, as is indicated at 12 'nor the complete Engagement of the tab ends 5 in the pockets 9 is ensured.
  • the ring 8 is preferably fixedly attached to the associated prosthesis part.
  • screws are used to secure the engagement, they can be used for power transmission and dimensioned accordingly.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Saccharide Compounds (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

Endoprothèse formée de deux parties assemblées par des plaquettes à recouvrement. La fiabilité d'assemblage est améliorée par le fait que les extrémités (5) de la bride de serrage (3) s'engagent par liaison de forme dans la bride femelle (9) de l'autre extrémité correspondante de la prothèse. Les plaquettes (3) sont assujetties en position d'engagement par des vis (7). La face d'appui (6), par laquelle les plaquettes (3) se chevauchent, est inclinée par rapport à l'axe longitudinal de la zone de jonction (2) de la prothèse, ce qui permet d'une part l'épaississement des plaquettes (3) près de leur point de raccordement avec la prothèse correspondante, ainsi qu'une bonne transmission de force, et d'autre part un engagement sans jeu des extrémités (5) des parties à recouvrement (3) dans les brides femelles (9).
PCT/EP1992/002730 1991-12-02 1992-11-26 Endoprothese WO1993010724A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US08/094,082 US5383933A (en) 1991-12-02 1992-11-26 Endoprosthesis
EP92923803A EP0568676B1 (fr) 1991-12-02 1992-11-26 Endoprothese
DE59205114T DE59205114D1 (de) 1991-12-02 1992-11-26 Endoprothese
GR960400697T GR3019293T3 (en) 1991-12-02 1996-03-13 Endoprosthesis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9114970U DE9114970U1 (de) 1991-12-02 1991-12-02 Endoprothese
DEG9114970.3U 1991-12-02

Publications (1)

Publication Number Publication Date
WO1993010724A1 true WO1993010724A1 (fr) 1993-06-10

Family

ID=6873838

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1992/002730 WO1993010724A1 (fr) 1991-12-02 1992-11-26 Endoprothese

Country Status (7)

Country Link
US (1) US5383933A (fr)
EP (1) EP0568676B1 (fr)
AT (1) ATE133057T1 (fr)
DE (2) DE9114970U1 (fr)
ES (1) ES2084392T3 (fr)
GR (1) GR3019293T3 (fr)
WO (1) WO1993010724A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5674296A (en) 1994-11-14 1997-10-07 Spinal Dynamics Corporation Human spinal disc prosthesis
DE19754079A1 (de) * 1997-12-05 1999-06-10 Gmt Medizinische Technik Gmbh Endoprothese zum mindestens teilweisen Ersatz einer Tibia
CA2338379A1 (fr) 1998-07-22 2000-02-03 Spinal Dynamics Corporation Prothese discale, cylindrique et filetee, multidiscoide, utilisable seule ou en rangee
WO2000013619A1 (fr) * 1998-09-04 2000-03-16 Spinal Dynamics Corporation Prothese discale thoraco-lombaire, multi discoide, a forme d'arachide ou de lunettes
US6749635B1 (en) 1998-09-04 2004-06-15 Sdgi Holdings, Inc. Peanut spectacle multi discoid thoraco-lumbar disc prosthesis
CA2426453A1 (fr) 2000-08-08 2002-02-14 Sdgi Holdings, Inc. (D/B/A Medtronic Sofamor Danek, Inc.) Methode amelioree et appareil d'implantation stereotactique
US7125380B2 (en) * 2000-08-08 2006-10-24 Warsaw Orthopedic, Inc. Clamping apparatus and methods
US7601174B2 (en) * 2000-08-08 2009-10-13 Warsaw Orthopedic, Inc. Wear-resistant endoprosthetic devices
CA2429246C (fr) * 2000-08-08 2011-06-07 Vincent Bryan Prothese d'articulation implantable
US6562045B2 (en) 2001-02-13 2003-05-13 Sdgi Holdings, Inc. Machining apparatus
US7025787B2 (en) * 2001-11-26 2006-04-11 Sdgi Holdings, Inc. Implantable joint prosthesis and associated instrumentation
US7364589B2 (en) * 2003-02-12 2008-04-29 Warsaw Orthopedic, Inc. Mobile bearing articulating disc
EP3381410A1 (fr) * 2017-03-31 2018-10-03 Waldemar Link GmbH & Co. KG Douille de raccordement pour tiges d'ancrage de deux prothèses disposées en regard

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578081A (en) * 1982-02-17 1986-03-25 Howmedica International, Inc. Bone prosthesis

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938768A (en) * 1987-03-09 1990-07-03 Henry Ford Hospital Bone gap bridging and fusing device
DE8706999U1 (de) * 1987-05-15 1987-07-23 Howmedica GmbH, 2314 Schönkirchen Endoprothese für femorale oder tibiale Gelenkknochenteile und angrenzende Knochenabschnitte
SU1671286A1 (ru) * 1988-10-13 1991-08-23 Б.Г.Зимлицкий и Е.Д.Соломко Эндопротез диафиза
IT1234281B (it) * 1989-06-09 1992-05-14 Roltra Spa Protesi per la riduzione e il bloccaggio di fratture ossee di arti

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578081A (en) * 1982-02-17 1986-03-25 Howmedica International, Inc. Bone prosthesis

Also Published As

Publication number Publication date
EP0568676B1 (fr) 1996-01-17
US5383933A (en) 1995-01-24
DE9114970U1 (de) 1992-02-20
EP0568676A1 (fr) 1993-11-10
DE59205114D1 (de) 1996-02-29
ES2084392T3 (es) 1996-05-01
ATE133057T1 (de) 1996-02-15
GR3019293T3 (en) 1996-06-30

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